Stockholders' Equity - Schedule of Compensation Cost (Details) - USD ($) $ in Thousands |
3 Months Ended | |
---|---|---|
Mar. 29, 2019 |
Mar. 30, 2018 |
|
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Total stock-based compensation expense | $ 2,641 | $ 1,301 |
Employee Stock Option | ||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Total stock-based compensation expense | 1,430 | 619 |
Restricted Stock | ||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Total stock-based compensation expense | 82 | 51 |
Restricted Stock Units (RSUs) | ||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Total stock-based compensation expense | 1,104 | 598 |
Non Employee Stock Options | ||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Total stock-based compensation expense | $ 25 | $ 33 |